
Regular verb: sway - swayed - swayed
Simple form | V-ing form | 
| I must sway you must sway he must sway we must sway you must sway they must sway  | I must be swaying you must be swaying he must be swaying we must be swaying you must be swaying they must be swaying  | 
Perfect | V-ing perfect | 
| I must have swayed you must have swayed he must have swayed we must have swayed you must have swayed they must have swayed  | I must have been swaying you must have been swaying he must have been swaying we must have been swaying you must have been swaying they must have been swaying  | 
Simple form | V-ing form | 
| I mustn't sway you mustn't sway he mustn't sway we mustn't sway you mustn't sway they mustn't sway  | I mustn't be swaying you mustn't be swaying he mustn't be swaying we mustn't be swaying you mustn't be swaying they mustn't be swaying  | 
Perfect | V-ing perfect | 
| I mustn't have swayed you mustn't have swayed he mustn't have swayed we mustn't have swayed you mustn't have swayed they mustn't have swayed  | I mustn't have been swaying you mustn't have been swaying he mustn't have been swaying we mustn't have been swaying you mustn't have been swaying they mustn't have been swaying  | 
Simple form | V-ing form | 
| must I sway? must you sway? must he sway? must we sway? must you sway? must they sway?  | must I be swaying? must you be swaying? must he be swaying? must we be swaying? must you be swaying? must they be swaying?  | 
Perfect | V-ing perfect | 
| must I have swayed? must you have swayed? must he have swayed? must we have swayed? must you have swayed? must they have swayed?  | must I have been swaying? must you have been swaying? must he have been swaying? must we have been swaying? must you have been swaying? must they have been swaying?  | 
Simple form | V-ing form | 
| mustn't I sway? mustn't you sway? mustn't he sway? mustn't we sway? mustn't you sway? mustn't they sway?  | mustn't I be swaying? mustn't you be swaying? mustn't he be swaying? mustn't we be swaying? mustn't you be swaying? mustn't they be swaying?  | 
Perfect | V-ing perfect | 
| mustn't I have swayed? mustn't you have swayed? mustn't he have swayed? mustn't we have swayed? mustn't you have swayed? mustn't they have swayed?  | mustn't I have been swaying? mustn't you have been swaying? mustn't he have been swaying? mustn't we have been swaying? mustn't you have been swaying? mustn't they have been swaying?  |